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Benign paroxysmal positional vertigo: is vestibular evoked myogenic potential testing useful?
Giovanni Longo1, Marina Onofri, Teresa Pellicciari
1Otolaryngology Unit, University of Bari "A. Moro", Italy.
Acta Oto-Laryngologica
|November 23, 2011
Summary
Vestibular evoked myogenic potentials (VEMPs) reveal saccular dysfunction in benign paroxysmal positional vertigo (BPPV). Abnormal VEMPs in BPPV patients indicate potential saccular damage and aid prognosis.
Area of Science:
- Neuroscience
- Otolaryngology
- Vestibular System
Background:
- Benign paroxysmal positional vertigo (BPPV) is a common inner ear disorder.
- Vestibular evoked myogenic potentials (VEMPs) assess otolith organ function.
- Saccular dysfunction may contribute to BPPV symptoms.
Purpose of the Study:
- To evaluate VEMPs in patients with posterior semicircular canal (PSC) BPPV.
- To compare VEMP results between BPPV patients and healthy controls.
- To correlate VEMP findings with clinical presentation in BPPV.
Main Methods:
- Prospective study at a tertiary referral center.
- 23 BPPV patients and 24 controls underwent otoneurologic and audiovestibular evaluation.
- Included pure-tone audiometry, caloric testing, and VEMP registration.
Main Results:
- No significant difference in VEMP thresholds or latencies between groups.
- BPPV patients showed significantly higher rates of abnormal VEMPs (p < 0.001).
- Age, number of BPPV attacks, and duration of the last attack correlated with VEMP parameters.
Conclusions:
- VEMPs can identify saccular dysfunction in PSC-BPPV patients.
- Abnormal VEMPs correlate with BPPV severity and recurrence.
- VEMPs aid in defining saccular damage extent and patient prognosis in BPPV.
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